* Plants: All plants are photoautotrophs, from the smallest moss to the tallest redwood tree. They use chlorophyll in their leaves to capture sunlight and convert it into energy.
* Algae: These are a diverse group of single-celled and multicellular organisms that live in water. They are important primary producers in aquatic ecosystems.
* Cyanobacteria: These are bacteria that can photosynthesize. They were likely responsible for introducing oxygen into the Earth's atmosphere billions of years ago.
It's important to note that not all organisms that have chlorophyll can photosynthesize. For example, some plants like parasitic plants rely on other plants for their food and don't perform photosynthesis themselves.
